How to generate zip file after woocommerce_email_attachments Woocommerce hook - woocommerce

Question

What i want to do is create pdf (pdf's) on woocommerce_email_attachments hook, then create zip file with these pdf's, and then on thankyou page locate button to download this zip. To generate zip I used woocommerce_before_thankyou hook but this is too late. So I tried
woocommerce_order_status_on-hold,
woocommerce_order_status_processing
But these hooks seems not firing, maybe they work on transitions in admin order page. Also I tried woocommerce_payment_complete with test paypal account - not created zip also.
Or maybe these hooks fire before woocommerce_email_attachments and there is no pdf yet to create zip? So can you suggest hook after sending wc email but before woocommerce_before_thankyou ?
Code which I use to generate pdf's:
add_filter('woocommerce_email_attachments', 'attach_order_notice', 10, 3);
function attach_order_notice($attachments, $email_id, $order)
{
// check if all variables properly set
if (!is_object($order) || !isset($email_id)) {
return $attachments;
}
// Skip User emails
if (get_class($order) == 'WP_User') {
return $attachments;
}
// do not process low stock notifications, user emails etc!
if (in_array($email_id, array('no_stock', 'low_stock', 'backorder', 'customer_new_account', 'customer_reset_password'))) {
return $attachments;
}
// final check on order object
if (!($order instanceof \WC_Order || is_subclass_of($order, '\WC_Abstract_Order'))) {
return $attachments;
}
// if ($email_id == 'customer_on_hold_order') {
$order_items = $order->get_items(['line_item']);
$date = $order->get_date_created()->date('h-i-s,j-m-y');
foreach ($order_items as $product) {
$html = render_template(locate_template('pdf/certificate/certificate.php'), ['order' => $order, 'order_product' => $product]);
$html = utf8_decode(mb_convert_encoding($html, 'HTML-ENTITIES', 'UTF-8'));
$options = new Dompdf\Options([
'tempDir' => get_template_directory() . '/certificate',
'fontDir' => get_template_directory() . '/assets/fonts/',
'chroot' => get_template_directory(),
'defaultFont' => 'Montserrat',
'isRemoteEnabled' => true,
'isHtml5ParserEnabled' => true
]);
$dompdf = new Dompdf\Dompdf($options);
$dompdf->loadHtml($html);
$dompdf->setPaper('A4', 'portrait');
$dompdf->render();
$data = $dompdf->output();
$pdf_path = get_template_directory() . "/certificate/product-{$product->get_product_id()}({$date}).pdf";
file_put_contents($pdf_path, $data);
$attachments[] = $pdf_path;
}
// }
return $attachments;
}
Code which I use to create zip:
add_action('woocommerce_before_thankyou', 'custom_make_thank_page');
function custom_make_thank_page($order_id)
{
$order = wc_get_order($order_id);
$order_items = $order->get_items(['line_item']);
$date = $order->get_date_created()->date('h-i-s,j-m-y');
$total_quantity = array_sum(array_map(function ($product) {
return $product->get_quantity();
}, $order_items));
//Zip
$zip = new ZipArchive();
$file = TMP_PATH . '/pdf/zip/certificates-' . $order->get_id() . '.zip';
if ($zip->open($file, ZipArchive::CREATE) === TRUE) {
foreach ($order_items as $item) {
$file_pdf = get_template_directory() . "/certificate/product-{$item->get_product_id()}({$date}).pdf";
if (file_exists($file_pdf)) {
$zip->addFile($file_pdf, "/certificate/product-{$item->get_product_id()}({$date}).pdf");
}
}
$zip->close();
}
?>
<?php if (!$order->has_status('failed')) : ?>
<a href="<?php echo TMP_URL . '/pdf/zip/certificates-' . $order->get_id() . '.zip'; ?>" class="button button-thank-page"><span>Download certificate</span>
</a> // Here downloading not works, works only after reloading page
</div>
<?php endif; ?>
<?php
}